CN115771859A - Hydraulic lifting type control system - Google Patents
Hydraulic lifting type control system Download PDFInfo
- Publication number
- CN115771859A CN115771859A CN202211604487.5A CN202211604487A CN115771859A CN 115771859 A CN115771859 A CN 115771859A CN 202211604487 A CN202211604487 A CN 202211604487A CN 115771859 A CN115771859 A CN 115771859A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- lifting
- branch
- cavity
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Actuator (AREA)
Abstract
A hydraulic lifting control system comprises a vehicle body, a hydraulic control module and a lifting module; the number of the lifting modules is four; the hydraulic control module includes: the device comprises an oil tank, a pump, a filter, a first one-way valve, a second one-way valve, a first reversing valve, a second reversing valve, a pressure gauge, an energy accumulator and a pressure reducing valve; the oil pump is arranged between the pump and the oil tank, the pump pumps the oil out of the oil tank and respectively enters a first oil path and a second oil path, a first one-way valve and a first reversing valve are arranged in the first oil path, a second one-way valve and a second reversing valve are arranged in the second oil path, the downstream end of the first reversing valve is connected with a first branch and a second branch, the downstream end of the second reversing valve is connected with a third branch and a fourth branch, pressure gauges and pressure reducing valves are arranged in the first branch, the second branch and the fourth branch, and an energy accumulator is connected in each of the second branch and the fourth branch.
Description
Technical Field
The invention relates to the field of autonomous mobile vehicle components, in particular to a hydraulic lifting control system.
Background
With the progress of modern science and technology, autonomous mobile vehicles are widely used in various fields. It is widely applied to urban and field environments. And also can be widely applied to various fields such as detection, carrying, rescue and the like. In the face of intricate environments, there is also considerable room for improvement in the research on autonomous moving vehicles.
In actual engineering practice, the following problems exist:
1. the autonomous moving vehicle in the prior art cannot automatically, effectively and flexibly adjust the height in the face of an intricate terrain, so that the functionality and the adaptability are poor.
2. The prior art hydraulic cylinder realizes stroke change through piston movement, however, for the telescopic leg of the vehicle, the telescopic structure between the leg and the shell is long, and if the length of the hydraulic cylinder is added, the proportion of the leg is too large relative to the whole vehicle, which is obviously not feasible.
3. In the prior art, the supply pressure on two sides of a piston in the hydraulic cylinder is similar, but for the support leg hydraulic cylinder, the sizes of piston cavities are different due to different structures on two sides of the support leg hydraulic cylinder, and the sizes of the piston cavities can influence the pressure and the pressure response.
4. As described above, in the leg cylinder, the size of the piston chamber is different due to the difference in the structures of the two sides of the leg cylinder, and when the size of the piston chamber is too small, the liquid is blocked from returning, and an undesirable water hammer phenomenon is caused.
5. The piston of the prior art has no stroke positioning function, and the sliding piece in other fields may have a stop piece which cannot be effectively positioned.
6. The prior art slide may have only a stop but this is not sufficient for the telescopic legs, which also have the effect of gravity, the combination of which results in excessive downward pressure.
7. The hydraulic cylinder control flow path in the prior art can only realize basic functions and cannot realize specific special functions.
Disclosure of Invention
In order to overcome the problems, the invention provides a solution to solve the problems.
The technical scheme adopted by the invention for solving the technical problem is as follows: a hydraulic lifting control system comprises a vehicle body, a hydraulic control module and a lifting module; the lifting module and the hydraulic control module are arranged on the vehicle body, and the number of the lifting modules is four; the hydraulic control module includes: the device comprises an oil tank, a pump, a filter, a first one-way valve, a second one-way valve, a first reversing valve, a second reversing valve, a pressure gauge, an energy accumulator and a pressure reducing valve; the filter is arranged between the pump and the oil tank, the pump pumps oil out of the oil tank and respectively enters a first oil path and a second oil path, a first one-way valve and a first reversing valve are arranged in the first oil path, a second one-way valve and a second reversing valve are arranged in the second oil path, the downstream end of the first reversing valve is connected with a first branch and a second branch, the downstream end of the second reversing valve is connected with a third branch and a fourth branch, pressure gauges and pressure reducing valves are arranged in the first branch, the second branch and the fourth branch are respectively connected with an energy accumulator; the lifting module comprises a cylinder body, supporting legs, an extension end input module, a lifting end input module, a top block, a supporting plate, a bottom plate, a sealing block, a left cavity, a lifting cavity and a pressing cavity; the cylinder body corresponding to each lifting module is respectively a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body;
wherein the elongated end input module comprises an elongated input tube, and the lifting end input module comprises a lifting input tube and a connection box; the cylinder body is provided with a lifting input port and an extending input port; the supporting legs comprise piston plates, I-shaped legs, positioning blocks and inner cavities;
the lower end of the supporting leg is connected with a wheel, the I-shaped leg comprises an I-shaped cross section, the I-shaped leg can stretch out and draw back in the cylinder body, the lower end of the I-shaped leg extends out of the cylinder body, the upper end of the I-shaped leg is provided with the piston plate, a gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder body, the lifting input port is communicated with the gap, the lower end of the cylinder body is provided with the bottom plate, and the thickness of the top wall of the cylinder body is larger than that of the bottom plate;
the inner wall of the cylinder body is connected with the sealing block, and the sealing block and the I-shaped leg form sliding sealing fit; when the piston plate is horizontally placed, the left cavity is formed on the left side of the sealing block in the cylinder body, the lifting cavity is formed between the sealing block and the piston plate, and the pressing cavity is formed on the right side of the piston plate; the inner cavity is arranged in the I-shaped leg and is communicated with the lifting cavity through a through hole;
the positioning block is arranged on the I-shaped leg, when the positioning block is abutted against the sealing block, the projection in the axial direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing to form the inner cavity; the lifting input pipe is communicated with the lifting cavity through the connecting box and the lifting input port, the diameter of the connecting box is twice of that of the lifting input pipe, and the diameter of the connecting box is twice of that of the lifting input pipe;
the I-shaped legs are provided with the jacking blocks and the supporting plates, the jacking blocks are connected with the supporting plates, the jacking blocks and the supporting plates are positioned outside the cylinder body, and the supporting plates can be abutted against the bottom plate to limit the stroke in the stroke of the I-shaped legs shrinking into the cylinder body;
the pipeline of the first branch is connected with the lifting input pipes of the first cylinder body and the second cylinder body; the pipeline of the second branch is connected with the first cylinder body and the extension input pipe of the second cylinder body; the pipeline of the third branch is connected with the lifting input pipes of the third cylinder body and the fourth cylinder body; and the pipeline of the fourth branch is connected with the extension input pipes of the third cylinder body and the fourth cylinder body.
Preferably, the diameter of the raised inlet is twice the diameter of the through hole.
Preferably, the diameter of the junction box is equal to the diameter of the raised inlet.
Preferably, the diameter of the raised inlet is twice the diameter of the elongated inlet.
Preferably, the thickness of the top wall is three times the thickness of the bottom plate.
Preferably, the gap includes a left chamber and a lift chamber.
Preferably, the lift input port is in communication with the lift chamber.
Preferably, the positioning block does not abut against the inner wall of the cylinder body.
Preferably, the cylinder comprises a rectangular cross-section.
Preferably, the lifting input port is arranged on the cylinder wall corresponding to the long edge of the cylinder body section.
The invention has the beneficial effects that:
1. the first point that provides to the background art has set up a hydraulic control's flexible landing leg to can be better realize the flexible of automated control landing leg, adapt to different topography.
2. The second point that proposes to the background art, with the landing leg flexible with the flexible combination of pneumatic cylinder, in incorporating the landing leg in the pneumatic cylinder module, the landing leg sets up to the I-shaped structure simultaneously, the concave part of I-shaped structure tentatively provides piston chamber space to establish preliminary hydraulic pressure space between landing leg and hydraulic cylinder body, reduced flexible module overall length, better service lifting action.
3. Aiming at the third point provided by the background technology, by utilizing the principle of 'flow speed slowing and pressure increasing' related to the Bernoulli principle, a connecting diffusion box is arranged between an input pipe corresponding to the lifting input end of the supporting leg and the hydraulic cylinder body, and the diffusion box increases the input space to reduce the flow speed, so that the pressure is increased objectively, the input space is increased, and the lifting action is realized better.
4. The fourth point that provides to the background art has constructed further enlarged space, has specifically seted up the cavity in I-shaped landing leg, and the cavity passes through the hole and is connected with the lifting space to further enlarged lifting piston chamber, avoided the too small formula water hammer that blocks that leads to of lifting piston chamber.
5. The fifth point that provides to the background art has set up the locating piece on the I-shaped landing leg, not only can realize the backstop, can also realize when landing leg extension position, and the inside cavity of landing leg is directly aimed at to the lifting input port to make input liquid directly get into inside cavity, in order to avoid blockking formula water hammer.
6. The sixth point that provides to the background art has set up outer backstop structure in the outside of pneumatic cylinder, and outer backstop structure includes kicking block and backup pad, and the backup pad supports hydraulic cylinder body to outer backstop and the effect of support gravity have been played simultaneously.
7. Aiming at the seventh point proposed by the background technology, an energy accumulator with a pressure maintaining function is arranged on a flow path extending out of a hydraulic cylinder driving support leg so as to realize pressure maintaining under the extension state of the support leg; the connecting box is arranged on the flow path of the hydraulic cylinder driving lifting support leg to enlarge the input space and reduce the flow speed, so that a hydraulic flow path with strong pertinence and strong functionality is designed according to different actual needs.
Note: the foregoing designs are not sequential, each of which provides a distinct and significant advance in the present invention over the prior art.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a collapsed leg of the present invention.
FIG. 2 is a schematic view of the extension state of the leg of the present invention
FIG. 3 is a cross-sectional view of the interior of the cylinder in the contracted state of the present invention.
FIG. 4 is a cross-sectional view of the interior of the extended hydraulic cylinder of the present invention
FIG. 5 is a transverse cross-sectional view of the position of the seal block of the present invention
FIG. 6 is an overall view of the mobile control system of the present invention
FIG. 7 is a flow diagram of a hydraulic control system module of the present invention
In the figures, the reference numerals are as follows:
1. the hydraulic control system comprises a cylinder body, 2, supporting legs, 3, a rotating shaft, 4, wheels, 5, an extension end input module, 6, a lifting end input module, 7, a top block, 8, a supporting plate, 9, a top wall, 10, a bottom plate, 11, a lifting input port, 12, an extension input port, 13, a lifting input pipe, 14, a connecting box, 15, an extension input pipe, 16, a positioning block, 17, a piston plate, 18, an I-shaped leg, 19, a left cavity, 20, a sealing block, 21, a lifting cavity, 22, a pressing cavity, 23, a through hole, 24, an inner cavity, 25, a gap, 26, an oil suction filter, 27, a pump motor, 28, an oil tank, 29, a pump, 30, a pipeline filter, 31, a one-way valve, 32, a reversing valve, 33, a pressure gauge, 34, an energy accumulator, 35, a pressure reducing valve, 36, a vehicle body, 37, a module, 38, a lifting module, 39, a first oil path, 40, a second oil path, 41, a first branch path, 42, a second branch path, 43, a third branch path, 44 and a fourth branch path.
Detailed Description
As shown in the figure: a hydraulic lifting control system comprises a vehicle body, a hydraulic control module and a lifting module; the lifting module and the hydraulic control module are arranged on the vehicle body, and the number of the lifting modules is four; the hydraulic control module includes: the device comprises an oil tank, a pump, a filter, a first one-way valve, a second one-way valve, a first reversing valve, a second reversing valve, a pressure gauge, an energy accumulator and a pressure reducing valve; the filter is arranged between the pump and the oil tank, the pump pumps oil out of the oil tank and respectively enters a first oil path and a second oil path, a first one-way valve and a first reversing valve are arranged in the first oil path, a second one-way valve and a second reversing valve are arranged in the second oil path, the downstream end of the first reversing valve is connected with a first branch and a second branch, the downstream end of the second reversing valve is connected with a third branch and a fourth branch, pressure gauges and pressure reducing valves are arranged in the first branch, the second branch and the fourth branch are respectively connected with an energy accumulator; the lifting module comprises a cylinder body, supporting legs, an extension end input module, a lifting end input module, a top block, a supporting plate, a bottom plate, a sealing block, a left cavity, a lifting cavity and a pressing cavity; the cylinder body corresponding to each lifting module is respectively a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body;
wherein the elongated end input module comprises an elongated input tube, and the lifting end input module comprises a lifting input tube and a connection box; the cylinder body is provided with a lifting input port and an extending input port; the supporting legs comprise piston plates, I-shaped legs, positioning blocks and inner cavities;
the lower end of the supporting leg is connected with a wheel, the I-shaped leg comprises an I-shaped cross section, the I-shaped leg can stretch out and draw back in the cylinder body, the lower end of the I-shaped leg extends out of the cylinder body, the upper end of the I-shaped leg is provided with the piston plate, a gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder body, the lifting input port is communicated with the gap, the lower end of the cylinder body is provided with the bottom plate, and the thickness of the top wall of the cylinder body is larger than that of the bottom plate;
the inner wall of the cylinder body is connected with the sealing block, and the sealing block and the I-shaped leg form sliding sealing fit; when the piston plate is horizontally placed, the left cavity is formed on the left side of the sealing block in the cylinder body, the lifting cavity is formed between the sealing block and the piston plate, and the pressing cavity is formed on the right side of the piston plate; the inner cavity is arranged in the I-shaped leg and is communicated with the lifting cavity through a through hole;
the I-shaped leg is provided with the positioning block, when the positioning block is abutted against the sealing block, the projection in the axial direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing to form the inner cavity; the lifting input pipe is communicated with the lifting cavity through the connecting box and the lifting input port, the diameter of the connecting box is twice of that of the lifting input pipe, and the diameter of the connecting box is twice of that of the lifting input pipe;
the I-shaped legs are provided with the jacking blocks and the supporting plates, the jacking blocks are connected with the supporting plates, the jacking blocks and the supporting plates are positioned outside the cylinder body, and the supporting plates can be abutted against the bottom plate to limit the stroke in the stroke of the I-shaped legs shrinking into the cylinder body;
the pipeline of the first branch is connected with the lifting input pipes of the first cylinder body and the second cylinder body; the pipeline of the second branch is connected with the first cylinder body and the extension input pipe of the second cylinder body; the pipeline of the third branch is connected with the lifting input pipes of the third cylinder body and the fourth cylinder body; and the pipeline of the fourth branch is connected with the extension input pipes of the third cylinder body and the fourth cylinder body.
As shown in the figure: the diameter of the lifting input port is twice the diameter of the through hole. The diameter of the junction box is equal to the diameter of the lifting input port. The diameter of the elevated inlet is twice the diameter of the elongated inlet. The thickness of the top wall is three times the thickness of the bottom plate. The gap includes a left cavity and a lift cavity. The lifting input port is communicated with the lifting cavity. The positioning block is not abutted against the inner wall of the cylinder body. The cylinder body comprises a rectangular cross section. The lifting input port is arranged on the cylinder wall corresponding to the long edge of the section of the cylinder body.
The working principle of the mobile equipment is as follows: each wheel corresponds to one wheel hub motor, and each wheel hub motor drives the corresponding wheel to move.
The above detailed description is specific to possible embodiments of the present invention, and the embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hydraulic lift control system characterized by: the hydraulic control lifting device comprises the vehicle body, the hydraulic control module and a lifting module; the lifting module and the hydraulic control module are arranged on the vehicle body, and the number of the lifting modules is four; the hydraulic control module includes: the device comprises an oil tank, a pump, a filter, a first one-way valve, a second one-way valve, a first reversing valve, a second reversing valve, a pressure gauge, an energy accumulator and a pressure reducing valve; the filter is arranged between the pump and the oil tank, the pump pumps oil out of the oil tank and respectively enters a first oil path and a second oil path, a first one-way valve and a first reversing valve are arranged in the first oil path, a second one-way valve and a second reversing valve are arranged in the second oil path, the downstream end of the first reversing valve is connected with a first branch and a second branch, the downstream end of the second reversing valve is connected with a third branch and a fourth branch, pressure gauges and pressure reducing valves are arranged in the first branch, the second branch and the fourth branch are respectively connected with an energy accumulator; the lifting module comprises a cylinder body, supporting legs, an extension end input module, a lifting end input module, a top block, a supporting plate, a bottom plate, a sealing block, a left cavity, a lifting cavity and a pressing cavity; the cylinder body corresponding to each lifting module is respectively a first cylinder body, a second cylinder body, a third cylinder body and a fourth cylinder body;
wherein the elongated end input module comprises an elongated input tube, and the lifting end input module comprises a lifting input tube and a junction box; the cylinder body is provided with a lifting input port and an extending input port; the supporting legs comprise piston plates, I-shaped legs, positioning blocks and inner cavities;
the lower end of the supporting leg is connected with a wheel, the I-shaped leg comprises an I-shaped cross section, the I-shaped leg can stretch out and draw back in the cylinder body, the lower end of the I-shaped leg extends out of the cylinder body, the upper end of the I-shaped leg is provided with the piston plate, a gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder body, the lifting input port is communicated with the gap, the lower end of the cylinder body is provided with the bottom plate, and the thickness of the top wall of the cylinder body is larger than that of the bottom plate;
the inner wall of the cylinder body is connected with the sealing block, and the sealing block and the I-shaped leg form sliding sealing fit; when the piston plate is horizontally placed, the left cavity is formed on the left side of the sealing block in the cylinder body, the lifting cavity is formed between the sealing block and the piston plate, and the pressing cavity is formed on the right side of the piston plate; the inner cavity is arranged in the I-shaped leg and is communicated with the lifting cavity through a through hole;
the I-shaped leg is provided with the positioning block, when the positioning block is abutted against the sealing block, the projection in the axial direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing to form the inner cavity; the lifting input pipe is communicated with the lifting cavity through the connecting box and the lifting input port, the diameter of the connecting box is twice of that of the lifting input pipe, and the diameter of the connecting box is twice of that of the lifting input pipe;
the I-shaped legs are provided with the jacking blocks and the supporting plates, the jacking blocks are connected with the supporting plates, the jacking blocks and the supporting plates are positioned outside the cylinder body, and the supporting plates can be abutted against the bottom plate to limit the stroke in the stroke of the I-shaped legs shrinking into the cylinder body;
the pipeline of the first branch is connected with the lifting input pipes of the first cylinder body and the second cylinder body; the pipeline of the second branch is connected with the first cylinder body and the extension input pipe of the second cylinder body; the pipeline of the third branch is connected with the lifting input pipes of the third cylinder body and the fourth cylinder body; and the pipeline of the fourth branch is connected with the extension input pipes of the third cylinder body and the fourth cylinder body.
2. A hydraulic lift control system according to claim 1 wherein: the diameter of the raised input port is twice the diameter of the through hole.
3. A hydraulic lift control system according to claim 1 wherein: the diameter of the junction box is equal to the diameter of the elevated input port.
4. A hydraulic lift control system according to claim 3 wherein: the diameter of the elevated inlet is twice the diameter of the elongated inlet.
5. A hydraulic lift control system according to claim 1 wherein: the thickness of the top wall is three times the thickness of the bottom plate.
6. A hydraulic lift control system according to claim 1 wherein: the gap includes a left cavity and a lift cavity.
7. A hydraulic lift control system according to claim 6 wherein: the lift input port is in communication with the lift chamber.
8. A hydraulic lift control system according to claim 1 wherein: the positioning block is not abutted against the inner wall of the cylinder body.
9. A hydraulic lift control system according to claim 1 wherein: the cylinder body comprises a rectangular cross section.
10. A hydraulic lift control system according to claim 9 wherein: the lifting input port is arranged on the cylinder wall corresponding to the long edge of the section of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211604487.5A CN115771859B (en) | 2022-12-13 | 2022-12-13 | Hydraulic lifting control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211604487.5A CN115771859B (en) | 2022-12-13 | 2022-12-13 | Hydraulic lifting control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115771859A true CN115771859A (en) | 2023-03-10 |
| CN115771859B CN115771859B (en) | 2024-04-19 |
Family
ID=85392166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211604487.5A Active CN115771859B (en) | 2022-12-13 | 2022-12-13 | Hydraulic lifting control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115771859B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523788A1 (en) * | 1991-07-17 | 1993-01-20 | Weweler N.V. | Device for fixing the height of a vehicle chassis |
| CN106006446A (en) * | 2016-07-25 | 2016-10-12 | 唐国强 | Double-post lift and multifunctional inter-link maintenance vehicle containing the same |
| CN206287990U (en) * | 2016-12-21 | 2017-06-30 | 孙天笑 | One kind auxiliary parking apparatus |
| CN109131261A (en) * | 2017-06-15 | 2019-01-04 | 山东赛强机械制造股份有限公司 | Through type electric hydaulic supporting leg |
| CN111391798A (en) * | 2020-03-24 | 2020-07-10 | 淮阴工学院 | Quick response tire burst emergency support with steering capacity |
| CN114312687A (en) * | 2022-01-13 | 2022-04-12 | 陈建军 | Walking steering lifting device for engineering truck |
| CN115743053A (en) * | 2022-12-13 | 2023-03-07 | 衡阳泰豪通信车辆有限公司 | Telescopic supporting leg |
| CN116176195A (en) * | 2022-12-13 | 2023-05-30 | 衡阳泰豪通信车辆有限公司 | Multi-power-source all-terrain unmanned vehicle |
-
2022
- 2022-12-13 CN CN202211604487.5A patent/CN115771859B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0523788A1 (en) * | 1991-07-17 | 1993-01-20 | Weweler N.V. | Device for fixing the height of a vehicle chassis |
| CN106006446A (en) * | 2016-07-25 | 2016-10-12 | 唐国强 | Double-post lift and multifunctional inter-link maintenance vehicle containing the same |
| CN206287990U (en) * | 2016-12-21 | 2017-06-30 | 孙天笑 | One kind auxiliary parking apparatus |
| CN109131261A (en) * | 2017-06-15 | 2019-01-04 | 山东赛强机械制造股份有限公司 | Through type electric hydaulic supporting leg |
| CN111391798A (en) * | 2020-03-24 | 2020-07-10 | 淮阴工学院 | Quick response tire burst emergency support with steering capacity |
| CN114312687A (en) * | 2022-01-13 | 2022-04-12 | 陈建军 | Walking steering lifting device for engineering truck |
| CN115743053A (en) * | 2022-12-13 | 2023-03-07 | 衡阳泰豪通信车辆有限公司 | Telescopic supporting leg |
| CN116176195A (en) * | 2022-12-13 | 2023-05-30 | 衡阳泰豪通信车辆有限公司 | Multi-power-source all-terrain unmanned vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115771859B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104863909B (en) | With the spring pressurizing closed hydraulic oil container of volume, pressure and leakage detection function | |
| CN103511389B (en) | Single-acting hydraulic cylinder | |
| CN203730263U (en) | Pneumatic diaphragm pump | |
| CN203835821U (en) | Piston-type energy accumulator | |
| CN115743053A (en) | Telescopic supporting leg | |
| CN110936308A (en) | Triangular positioning inner sleeve type support | |
| CN115771859A (en) | Hydraulic lifting type control system | |
| CN105275899B (en) | Hydraulic system of concrete pumping equipment and concrete pumping equipment | |
| CN116176195A (en) | Multi-power-source all-terrain unmanned vehicle | |
| CN105782137B (en) | A kind of super-pressure accumulator | |
| CN212202673U (en) | Novel hydraulic system | |
| CN2821244Y (en) | Multiple plunger interlink synchronous shunt | |
| CN201106589Y (en) | Variable plunger pump for drilling machine | |
| CN205330904U (en) | Mud plunger pump | |
| CN208702831U (en) | A kind of oil-returning structure at a slow speed of oil cylinder | |
| CN201771885U (en) | Integral hydraulic oil cylinder | |
| CN201907577U (en) | Electric oil cylinder hydraulic device of commercial vehicle cab tilting device | |
| CN2721598Y (en) | Universal hydraulic jack | |
| CN209892534U (en) | Double-acting continuous hydraulic pressure booster | |
| CN213655333U (en) | Hydraulic system for refrigerator die carrier | |
| CN201635997U (en) | Pump structure with cooling effect | |
| CN215667002U (en) | Hydraulic device applied to carrier | |
| CN202946464U (en) | Road roller auxiliary valve group with hand-operated pump | |
| CN114992078B (en) | Manual oil filling pump with high mechanical efficiency | |
| CN219327686U (en) | Oil circuit block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |